The cost control model can show the change trend of the cost in the construction stage, control costs reasonably, and reduce the cost of construction risk. Based on the advanced BIM5D technology and the earned value method, this paper explores the potential advantages of BIM5D technology deeply in cost control, and analyzes the system implementation process of the cost control model systematically. The feasibility of the construction cost control model based on BIM5D technology is demonstrated through the cost control process of a certain Information Building in Beijing.